positive ulnar variance
Sports-related
wrist and hand injuries: a review. a PA radiograph of a patient with ulnar abutment revealing both 6 mm of ulnar-positive variance and incidentally an ulnar styloid nonunion. b Neutral to −1 mm of ulnar variance after a diaphyseal ulnar shortening osteotomy is performed
Negative
ulnar variance • Ulnar variance (illustration) - Ganzer Fall bei Radiopaedia
Positive
ulnar variance • Positive ulnar variance with TFCC tear - Ganzer Fall bei Radiopaedia
Positive
ulnar variance • Positive ulnar variance - Ganzer Fall bei Radiopaedia
Positive
ulnar variance • Lunotriquetral coalition - Ganzer Fall bei Radiopaedia
Positive ulnar variance describes where the distal articular surface of the ulna is more distal when compared to the articular surface of the radius.
It plays important role in wrist pathology such as ulnar impaction syndromes and thinning of the triangular fibrocartilage complex.
Radiographic features
Maximum forearm pronation results in an increase in positive ulnar variance, whereas maximum forearm supination decreases ulnar variance .
See also
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Ulna plus Variante:
